Thermostat unit



FIG. 1 is a perspective view of the thermostat unit design;

FIG. 2 is a front view of the thermostat unit design;

FIG. 3 is a left side view of the thermostat unit design;

FIG. 4 is a right side view of the thermostat unit design;

FIG. 5 is a top view of the thermostat unit design;

FIG. 6 is a bottom view of the thermostat unit design; and,

FIG. 7 is a back view of the thermostat unit design. 

CLAIM The ornamental design for a thermostat unit, as shown and described. 